Thottle Body O-ring repair/replace with PICS - Page 3 - 3000GT/Stealth International Message Center

red_3000 · 02-23-2005, 12:16 AM

yeah I pressure tested, and I'm leaking from my y-pipe (stock pos) BOV (stock pos), BISS o-ring & TB o-rings. So I replaced the o-rings, got a dejontool y-pipe and I have a DSM BOV in the mail.

Hopefully that gets rid on my leaks, and most importantly, my hesitation (mainly when it's cold) and overly ritch problems.

red_3000 · 02-23-2005, 12:26 AM

Silly, I don't want to burst your bubble, but those o-rings might be made of EPDM rubber. You should check the box to see what they're made of. Nitrile, HI-sat nitrile, silicon, or Viton are what you want.
EPDM rubber will degrade quickly when it contacts oil/fuel. Also the upper temp limit is 250degrees (not sure how hot the TB gets though). I suspect that they are EPDM because it is very good for use with water, and it is the most economical. If the box makes no mention of the composition... most likely EPDM.

Mellon · 02-23-2005, 05:03 AM

Quote:

Originally Posted by red_3000

Silly, I don't want to burst your bubble, but those o-rings might be made of EPDM rubber. You should check the box to see what they're made of. Nitrile, HI-sat nitrile, silicon, or Viton are what you want.
EPDM rubber will degrade quickly when it contacts oil/fuel. Also the upper temp limit is 250degrees (not sure how hot the TB gets though). I suspect that they are EPDM because it is very good for use with water, and it is the most economical. If the box makes no mention of the composition... most likely EPDM.

if those start leaking some day years down the road, replace them again worst case scenario.

BucknVR4 · 02-23-2005, 05:20 AM

Quote:

Originally Posted by red_3000

Silly, I don't want to burst your bubble, but those o-rings might be made of EPDM rubber. You should check the box to see what they're made of. Nitrile, HI-sat nitrile, silicon, or Viton are what you want.
EPDM rubber will degrade quickly when it contacts oil/fuel. Also the upper temp limit is 250degrees (not sure how hot the TB gets though). I suspect that they are EPDM because it is very good for use with water, and it is the most economical. If the box makes no mention of the composition... most likely EPDM.

That's what I was saying, just red_3000 has a more eloquent way of saying it.

J-Ville VR-4 · 02-23-2005, 08:19 AM

Quote:

Originally Posted by red_3000

The backs of them are hammered down (or crimped) from the factory.

The more commonly used term for this is peened

asitmc · 02-25-2005, 02:10 PM

so what do we do to take off that screws????????????
don't want to strip anything..

I am going to do this soon,

J-Ville VR-4 · 02-25-2005, 02:13 PM

Quote:

Originally Posted by asitmc

so what do we do to take off that screws????????????
don't want to strip anything..

I am going to do this soon,

I was just really careful. I used a lot of pressure on the screwdriver when unscrewing them.

red_3000 · 02-25-2005, 02:21 PM

Quote:

Originally Posted by asitmc

so what do we do to take off that screws????????????
don't want to strip anything..

I am going to do this soon,

I used a dremmel.
Here is a link with more pics about another o-ring to replace, and how to modify the TB to flow more air if you want to do that.
http://www.3si.org/forum/showthread.php?t=258294
Might as well get as much done as you can while it's off.

asitmc · 02-25-2005, 03:00 PM

okok, Thanks for the link and info.

AdamVR4 · 02-25-2005, 03:16 PM

Quote:

Originally Posted by J-Ville VR-4

I was just really careful. I used a lot of pressure on the screwdriver when unscrewing them.

Sometimes that works and sometimes it doesn't.

An impact screw driver made it almost impossible to strip them though. Those things are bad ass.

02-23-2005, 12:16 AM	#21 (permalink)
red_3000 Loud Noises!! Join Date: May 2004 Location: Oregon Drives: V R 4 Trader Rating: (4)	Re: Thottle Body O-ring repair/replace with PICS yeah I pressure tested, and I'm leaking from my y-pipe (stock pos) BOV (stock pos), BISS o-ring & TB o-rings. So I replaced the o-rings, got a dejontool y-pipe and I have a DSM BOV in the mail. Hopefully that gets rid on my leaks, and most importantly, my hesitation (mainly when it's cold) and overly ritch problems.

02-23-2005, 12:26 AM	#22 (permalink)
red_3000 Loud Noises!! Join Date: May 2004 Location: Oregon Drives: V R 4 Trader Rating: (4)	Re: Thottle Body O-ring repair/replace with PICS Silly, I don't want to burst your bubble, but those o-rings might be made of EPDM rubber. You should check the box to see what they're made of. Nitrile, HI-sat nitrile, silicon, or Viton are what you want. EPDM rubber will degrade quickly when it contacts oil/fuel. Also the upper temp limit is 250degrees (not sure how hot the TB gets though). I suspect that they are EPDM because it is very good for use with water, and it is the most economical. If the box makes no mention of the composition... most likely EPDM.

02-25-2005, 02:10 PM	#26 (permalink)
asitmc Forum Member Join Date: Jul 2004 Location: chesterfield, VA Drives: 97 3kgt VR-4 Trader Rating: (31)	Re: Thottle Body O-ring repair/replace with PICS so what do we do to take off that screws???????????? don't want to strip anything.. I am going to do this soon, __________________

02-25-2005, 03:00 PM	#29 (permalink)
asitmc Forum Member Join Date: Jul 2004 Location: chesterfield, VA Drives: 97 3kgt VR-4 Trader Rating: (31)	Re: Thottle Body O-ring repair/replace with PICS okok, Thanks for the link and info.

Sponsored Links
3000GT/Stealth International Message Center Advertisement